kohout



G. A. KUHOUT.

. STOKER.

APPLICATION FxLED MM2?, ma. 1,355,095.

Patnted Oct. 5, 1920.

4 EETS-SHEET I G. A. KOHOUT.

SUKER.

APPLmATmN man MAY 21.3913.

Patented Oct. 5, 1920.

4 SHEETS-SHEET 3 MWI/2611;

lnormal plane of the Stoker surface. Vclinkers and ashes thus'tumbleover onto be more clearly ap arent hereinafter. The Stoker bar sectionsllave wider and narrower portions, as shown, so that these stageredprotruding portions may intermes as shownmore clearly in Fig. 2 toprovide a smooth perforated aix-cooled upper surface. The portions aremade wider and narrower so that when the Stoker bar sections are tiltedthe wider portions will project above the narrower portions, as is shownin Fi?. 8, and will loosen and break up any clincers and stir .up theashes. These wider and narrower ortions also coperate to advance thefuel a ong the bed and spread it on the bed to fill up any blow holes.Normally the top surfaces of the sections lie in the come plane. Thisplane may be horizontal as shown in Fig. 1, or downwardly inclinedtown-rd the rear as is usual in furnaces of this kind. When the stolzerbars are tilted, the wider portions a., (see Fig. 2) proj ecting towardthe front portion of the furnace, are raised above and the rearwardlyextending portions b are lowered below the plane of the grate as shownin Fig. 8 and in dotted lines in Fig. -1. When thus tilted, the portionsa break up any clinkers that may have formed, and chnkers and ashes fallintoy the `Vsha ed spaces between the aprons 2G and 27 an thcadjacentface portions 25. AThere will be narrow openings at the bottom oftheV-shaped spaces through which line ashes will fall, but itis the purposeof this stolzer not to drop the ashes'through between the bars. Thespaces between the bare are uniform at all times whether the bars are innormal position or are tilted as shown in Fig. 8. The space also remainsuniform during the tilting of the bars. The spaces between the bars arenp roximatcly oucfourth of an inch in actualJprn-ctca. When the Stokerbar sections are returned to normal position, the portions b returnalong the aprons 27 and raise any clnkers ormshes l-:etween the faces 25and the aprons' 27 tr) thle .L uc i the' portions a, and in the `nextoperation of the Stoker are moved upwardly and forwardly by the portionsa.; It is this tumbling over tothe sides that causes the fuel p bedtobeleveled and all hlow holes to he filled up. Duringthese-movements of'the Stoker bars, the aprons 26` closely follow the edgesO and preventeverything but a little e ashes from falling through. In this rnalnnerthe fuel is worked rearward in the furnace and the -clinkerscan bedischarged at the end section 42. 'The portions of the sections ofsmaller width have thedependingt aprons 2T; The suiker-bar 4shown alsthe le in 1 and 8 has a straight ed e Vadjacent te door 13, `rovideclwith a ce pen apron 26". tric with the pivot 17 in order that the 'sapron is conceit l apron may at all times lie close to the fon wardfixed edge of the iurnnce to promu undue dropping through of the fuel.'llu` aprons 26 copernte with side walls 2S on both sides thereof toform a sort of pocket. there being an end wall 2l) at thc extremitiesof. the sections. The stoken' bur sccl ions nrc open at the bottom, asclearly apparent, 0:;- cepting for the partial closure due to lluaprons26 and 2. The trnnnions 1T of flul sections are carried in structuresmore clearly shown in Figs. 3, l, 5 :und 7. Thorlo structures comprisethe side frames llll suitably mounted 1n place which have ut ihr-iltopthe pillow blocks 3l. These. pillow blocks 31 receive thc trunuions ll'..In or der to hold the trunnious in position so that they cannot belifted out upwardly. vl pro vide lugs 32, which lugs copcrul'e will;

cover or lockingif blocks or clips lill, more clearly Shown. in Fig. 5.'lhese blocks or clips 33 have openings 3l to encircle rho trnnnions andhave cutmvay port-ions $5. which co crate with the lugs 32. thus l lprevent li ing the Stoker lmr sections out: of position when the coverblocks or clips 33 are mounted in pla-tc. Fingers 36 :1ro pio videdwhich limit the inward movenwzll o.' the cover blocks or clips 33, theselingers :lli coming into position below the ridge z-l'T (F' 4). Theupper portions of the blocks or ips 33 areuted by having the groom,- oropenings 38, as clearly apparent from 5. he positions of the trunnons l?relative to the Stoker bnr sections is secu more clearl from auinspection ol' Fig. s

The cover locks or clips 325 :nro provenir-l from moving away from thoframes: Illl lo.

bars 50 on each side of the grutto. Those bars are provided with lugsl'll ou ciu-h sllv, which lugs engage the lnnsoulv S2 ou ouv side andthe cover blocks or clips J-ll ou lla other. The ends of the born rustupon ilu' end supports for tho. stoken' frame shown in 1. When it isdesired to remore tho Stoker bar sections, the bars .ful are lrsli movedby lifting them vertically. 'The rover clips 33 maj1 be moved laterallyof the grote so as to dsengage the 1ugsl2 and than ll'tol vertically.During the lateral movement of the cover blocks or clips 33. the pivotsdisengage the o Jenings 34, us will he upprnrnl. The removu of the coverblocks or clips leaves the Stoker har sections freu to h:- liilml out ofthe blocks 31. The curvature given to the aprons 26 und 2 is such thatthe uxs of Vthe trunnion 17 is wccntrcnlly located relatively to thecenter point ol' the cin-lc arming the aprons 26 :mrl 9.?. Tn thismanner I am enabled to maintain llw odlfes 39 of the wider portions othe stolufr lm:- sections closely contigijuous to the apron t?? flux-ingthe time that the sections are. more] from the position shown in Fie. 1in l'ull lines to the position shown in Fig. 8. Simibut burnt out ashmay fall downwardly hetween the sections in about the same manner thatthis ash would fall -through the openings 41, provided in the faceplatesof the sections.

At the extreme right hand section of Fig. 1, I show an end grate section42 which is stationary, having openings 41 however. similar tol theopenings provided `inV the other sections, and this end section 42 has arounded inner face 43 so that rthe immediately adjoining stoker barseetionsmaj,y he tilted properly.Y without providing a large openingbetween the stoker har section and this yend section`42 at such timeswhen the Stoker har sections are not dumped farther than a predeterminedamount, which in the construction herein shown. is approximately 450. Ifthe sections are dumped to a position of 900, as shown in Fig. Si, orin' Fig. 1 in dotted lines, then quite a substantial opening isoccasioned between the end secu tion 4Q and its immediately adjoiningmov4 ahle Stoker har section. The clinkers and ash are dumpedtherethrough into the ash pit. Normally, when shaking. the lever 2l isoperated to tilt the stoker hars angularlv through a distance of about450.

it will he understood. of course, that the stoker har sections are to betilted onlyr in a clockwise direction from the position the),v occup)1in Fig. 1 in full lines. As these sections during the shaking operationare ltilted 45. the action of each section is to pile up the fuel uponthe section immediately to the right (Fig. l). In this way `the fuel isconstantly moved from left to right as the lever 491 isV moved hack andforth. The result of 'this actuation is that the green fuel which isthrown in through the firing door 13 is thrown upon the sectionsfarthest to the left. Then this green fuel may1 he coked. the productsof combustion passing over the hot fuel hed farthcr to the right. thereto he consumed liefore passing to the stack. A suhsequent actuation ofthe lever 2l causes a movement of the entire fuel hed to the right. thusproviding sparc for additional green fuel.

'hencver it is desired to remove the clinkcrs or other residue which hasnot passt-d through the stoker har sections, tia-n the lcvcr 91Y isactuated to tilt the sections more than 45g so that an opening isprovided at the extreme right hand portion of thegrate inmiediatelv tothe left of the end section. 4&2. If this dumping has heen sufficient topermit an open space on top of the movahle section at the extreme right(Fig. l). then thereafter the lever 2i is actuated to tilt the stokerhar sections a numher ot' times through an angle of 45, whereby the fuelis moved progressively to the right to cover any such open space.

It will he noted that the arrangement is such that a conjoint movementof all of the sections causes this progressive movement of the fnel.-Not onlyv does the shaking of the stoker sections cause a progressivemovement of the fuel toward the rear of the fui nace. hut il. alsolevels the fuel hed. thus insuring a more cfiicient combustion of thefuel. l

ln Fig. l()` I show a modified forni of end section which is to take thcplace of the end section 42, when desired. and this end section hl isi'iivotally mounted` as shown at 45 so that it may be tilted when thelink this actuated hack and forth. as will he readilyv apparent. l findthat under certain circumstaiu-es it is hctter to actually tilt the endsection than to depend merel)Y on the opening between the last movablestolter 95 section. such as the section 42.

From what has heen described the nature of lmy invention will hereadilyY clear to those skilled in. the art, and it will also heapparent that many modifications may he made within the scope of theappended claims.

l'laving. howcver. thus described one forni which niv invention mayvtake. what l claim as new and desire to secure hv Letters `Patent is:

1. A stokor having a plurality of individual interlneshing pivotedsections arranged in a series and having their top surfaces arrangedsuhstantially in a plane. means for 11.0 conjointly tilting all of saidsections. cach section having means adapted when said seetion is tiltedto deposit fuel upon the neXt succeeding section ofthe series, and meansprovided upon each section.eccentric to the pivot thereof for preventingdumping of the fuel through adjoining tilted grate sections.

2. A stoker having a pluralitv of individual sections arranged in aseries and having their top surfaces arranged suhstanlially in a plane,means for simultaneously tilting all of said sections, each sectionhaving projecting portions which intermesh with por tions of adjoiningsections and means adapted when said section is tilted to deposit fuelupon the next succeeding section of the series. and non-concentricaprons on each section for preventing dumping of thc fuel throughadjoining tilted grate sta-tions.

.3. .fi Stoker having a plurality of individual intermeshing sectionsarranged in a. serles and having thelr top surfaces arrangedsubstantiallj7 in a plane, means for conjointl'v tilting all of saidsections` each seetion having means adaptedwhen `said section is tiltedto deposit fuel. upon the next succeeding section ot the series, meansprovided upon each section for preventing dumping of the fuel throughadjoining tilted grate sections, and a` normally stationary end sectionhaving means for preventing dumping' of the fuel between said end sec'-tion and its adjoining movable section when said movable section istilted a given amount, but permitting dumping ot' the fuel when saidadjoining movable section is tilted a given amount.

4. A stoker having a plurality of individual sections Yarranged in aseries. and having their top surfaces arranged substantially in a plane.means for simultaneouslv tilting all of said sections, each sectionhaving n lms adapted when said section tilted te deposit fuel rearwardlyand sidewardly upon the next succeeding section of the series, means oneach section for preventing dumping of the fuel through adjoining tiltedgrate sections. and a normally stationary end section having means forpreventing dumping of the fuel between said end section and itsadjoining movable see-r tion when said movable section is tilted a givenamount. but permitting dumpingof the fuel when said adjoining movablesection is tilted a given amount.

A Stoker having a plurality of individual sections arranged in a series.and having their top surfaces arrangedsubstantialhv in 'a plane. meansfor eonjointljv tilting all ot said sections. adapted when said sectionis tilted to deposit fuel upon the next succeeding section ot' theseries, means provided upon each section for preventing dumping ot thefuel through adjoining tilted grate sections, and a normallyv stationaryend section having means for preventing dumping of the fuel between saidend section and its adjoining movable section when said movable sectionis tilted a given amount but permitting dumping ot the fuel when saidadjoining movable section is tilted a given amount. and means for atwill tilting said end section.

6. A stoker having a pluralityT ol individual sections arranged in aseries and having their top surfaces arranged substantiall)v in a plane.means for simultaneousl \1 tilting all of said sections. each sectionhaving projecting portions which intermesh with portions ofY adjoiningsections and means adapted when said section is tilted to deposit fuelupon the next succeeding section ot the series. means eccentric to thepivots of the section for preventing dumping ot the tuel each sectionhaving means through adjoining tilted grate sections, a normallystatlonarjr end section having means for preventing dumping of the t'uelbetween said end'section and its adjoining movable section when saidmovable section is tilted a. given amount. but permitting dumping ol thefuel when said adjoining movable section is tilted a given amount. andmeans for at will tilting said end section. i

7. Stoker having a pluralitv of intermeshing individual pivoted sectionsarranged in a series and having their top .surfaces arrangedsubstantially in a plane. means for conjointljY tilting all ot' saidsections, each section having wide portionsl cooperating with narrowportions on adjoining sections and said wide portions beingvadapted whensaid section is tilted to deposit fuel upon the next succeeding sectionof the series, and means provided upon each section eccentric to itspivot for preventing dumping ot' the fuel through adjoining tiltedsections.

S. stoker having a plurality of intermeshing individual pivoted sectionsarranged in a series and having their top sur faces arrangedsubstantialljy in a plane. means tor simultaneousl)r tilting all of saidsections. each section having means adapted when said section is tiltedto deposit fuel rearward and sidewardly upon the next succeeding sectionof the series. and means for preventing dumping of the fuel throughadjoining tilted sections, said last named means comprising dependingaprons eccentric to the pivots of the sections.

9. A stoker having a plurality of individual balanced Sections arrangedvin a series and having their top surfaces arranged substantiallyv in aplane. means for conjointly tilting all ot said sections. each sectionhaving means adapted when said .section is tilted to deposit fueluponthe next succeedingr section of -the series. depending eccentricaprons provided upon each section for preventing dumping of the fuelthrough adjoining tilted sections. and means for tiltingly supportingsaid individual sections. said aprons maintaining a constant spacebetween the-adjacent edges of the several sections when the sections aretilted.

1U. A stoker having a plurality of individual sections arranged in aseries and having their top surfaces arranged substantially in a plane.means for simultaneously tilting all of said sections, each section.having wide portions which swing below the normal plane of the .sectiontopwhen the section is tilted and permitting the fuel to be loweredtherewith and adapted; when said section is returned. to deposit fuelrearwardlv and sidewardljv upon the next .succeeding section ot' theseriesmeans for preventing dumping of the fuel through adjoining ltiltedsectlons. and means for tilt- 'ingly supporting said'individualsections.

11. A stoker having a plurality of centrallvY pivoted sections arrangedin a series and having their top surface arranged substantially in aplane, means for conjointly tilting all of said sections, each sectionhaving means adapted when said sectionfis tilted to deposit fuel uponthe next succeeding section ofthe series. removable locking blocks forholding the sections in place. means to permit removal of said blocks.and means provided upon each section for preventing dumping of the fuelthrough adjoining tilted sections, said last aforesaid means includingcurved aprons depending from said sections.

l2. A Stoker having a plurality of individual sections arranged in aseries and having their top surfaces arranged substantially in a plane.means for conjointly tilting all of said sections. each section havingprojecting portions which intermesh with portions of adjoining sectionsand means adapted when said section tilted to deposit fuel upon th'enext succeeding section of the series. and means provided upon cachsection for preventing dumping of the fue! through adjoining tiltedsections. said last aforesaid means including curved aprons dependingfrom said sections. said curved aprons having a. curvaturenoirconcentric with the axis of tilting of said sections.

13. A stoker having a plurality of individual sections arranged in aseries and having their top surfaces arranged substantially in a plane.means for simultaneonsljT tilting all of said sections. each sectionhaving wide portions cooperating with narrow poitions on ladjoiningsections and means adapted when said section is tilted to deposit fuelupon the next succeeding section of the series. and means for preventingdumping of the fuel through adjoining tilted sections. said lastaforesaid means including curved aprons depending from said sections,said curved aprons having a curvature nou-concentric with the axis oftilting of said sections.

14e. Stoker having ay plurality of individual centrally pivoted sectionsarranged i'n a series. .means for eonjointl \r tilting all of saidsections. each section having means adapted when said section is tiltedto deposit fuel upon the next succeeding section of the series. andmeans provided upon each sectioai l'or preventing dumping of the fuelthrough adjoining tilted sections. said last aforesaid means includingaprons havmg a curvature eccentric to the axis of rotation of saidpivotcd sections so as to nuiintain a constant space between theadjacent edges of the several sections when they are tilted.

15. A stoker having a pluralitjv of individual pivotal sections formedwith fiat upper surfaces and depending aprons on one 'side of andnon-concentric to the pivots of the sections, pivots for s aid sectionslocated below and between the extreme edges of said surfaces and meanswhereby said Sections may be operated in unison.

1K6. A stoker having a plurality of individual sections cach providedwith wide and narrow portions adapted to intermesh with narrow and wideportions of adjoining sections. pivots for said sections located betweenthe outer edges 'of said wider portions and means for simultaneouslyoperating all of said sections.` said wide portiv'is adapted to lowerportions of the fuel below the normal surface of the sections andthereafter raise said fuel portions and deposit them on the adjoiningsections.

17. A Stoker having a plurality of iudiv'idua intel-meshing pivotedsections. pivots for said sections located between the lateral edges ofsaid sections so as to provide balanced grate sections adapted to low`the fuel and then deposit it ou advance sections. and means forsimultaneousljsY operating all of said sections.

1S. A stoker having a plurality" of inA dividual sections..` pivotsat'the ends of the sections. side frames having bearings for saidpivots. a ridge on each frame below the bearings. locking clips havingopenings to receive the pivots and fingers on the locking clips forengaging beneath said ridges to limit the inward movement of the clipson the frames.

l5). stoiter having a pluralit)v of individual sections. pivots at theends of the sections. `side frames having blocks to receive the pivotsand lugs adjacent the blocks. locking clips having portions overlyingsaid pivots and cut awa)Y portions to receive said lugs and means toprevent said lugs 'from diseilxgaging said cut away portions. l

:20. Stoker having a plu'ralitj` of individual sections. pivots at theends ol' .said sections` side frames having blocks to rw ceive thepivots and lugs adjacent the blocks; locking clips overlying said blocksand liavingrcut awa)-v portions to receive said lugs and fingers on said'clips for engaging the side frames to limit the inward movement of theclips on the frames.

Q1. stoker of the character described comprising intermediately pivotedStoker bars. means to operate all of said bars simultaneousl),Y toadvance the fuel` and aprons depending from'the bars and eccentric tothe pivots thereof to prevent fuel falling between the bars when thcj"ari` tilted.

22. A stoker of the character described comprising pivoted stolier barshaving inter- .move it forwardlyover the bars,

meshing portions. mean` to operate all of said bars simultaneousl)v toadvance the fueh and aprons dependinglr from the bars and eccentric tothe pivots thereof to prevent fuel falling between the bars when theyare tilted.

23. .A stoker of the character described comprisingr pivoted stokerbars, means to tilt said bars a certain amount to advance the fuel. saidmeans beingr adapted to tilt the bars further to permit any refuse to bedischarged over the end bar only. and aprons depending from said barsandeccentric to the pivots thereof to prevent discharge of fuel or clinkcrsbetween said bars.

Q-t. A Stoker of the character described comprisingfr pivoted stokerbars, means to tilt all of said bars` simultaneously to ad- 'ance thefuel. means to dump any' clinkers that may collect at the discharge endof the bars. aud means eccentric to the pivots of said bars forpri-venting fuel or clinkers droppin, lr between the bars.

A stoker of the character described comprisinglr lpivoted stoker bars,an end section adjacent the rear stoken.' bar, and means to tilt thebars 4.3 to agitate the fuel and said means beingIr adapted to tilt thebars 90O so as to discharge clinkei's only between the end section andthe rear Stoker bar.

26. A stoker of the character described comprising interniesliinlerstolzer bars, an end section adjacent the rear stoker bar, and means totilt the bars a certain amount to agitate the fuel and more it rearwardover the bars, `said means being adapted to tilt prevent fuel the bars afurther amount so as to discharge clinkers only at the end section.

2T. A stoker 4of the character described comprising pivoted stoker barshaving extending portions which move upwardly when the bars are tiltedto break up clinkers, agitate the fuel and move it *forwardlyv over thebars, a single lever adapted to tilt all of the bars a certain amount inone direction only. and an end section adjacent the rear Stoker bar1said end section having' an edge adapted to accommodate the stoker barand said lever being adapted to tilt the bars a further amount todischarge clinkers and waste fuel between the rear Stoker barand saidend section.

A stoker of the character described con'iprisingr pivoted stoker barsplaced edge to edge. pivotsfor said bars positioned between the edges ofthe bars and means to and ashes from falling between the bars` when theyare tilted.y said means comprising an apron depending; from each bar andeccentric to the pivots of sand bar.

29. A device of the character described comprising pivoted stoker barsarranged edge to edger intermediately located pivots for said bars, andmeans on said bars eccentric to the pivots thereof for maintaining aconstant space between the adjacent edges of two bars when they aretilted to thereby prevent fuel and ashes from falling between the bars.

In witness whereof I hereunto subscribe mvv name this 11th day of May,A. D. 1918.

GEORGE A. KOHOUT.

